Presentation Information
[17p-M_110-7]Low-repetition-rate supercontinuum generation
using a MHz mode-locked fiber laser
〇Bao DinhThai1, Masanori Nishiura1,2 (1.Sevensix Inc., 2.Saitama Univ.)
Keywords:
supercontinuum,mode-locked
Supercontinuum (SC) lasers generated by combining high-peak-power optical pulses with highly nonlinear photonic crystal fibers (HNL-PCFs) are widely used in spectroscopy, imaging, and optical metrology. SC lasers seeded by mode-locked fiber lasers (MLFLs) offer the advantage of an all-fiber configuration. However, because the repetition rates of conventional MLFLs are typically as high as 20 to 80 MHz, several watts of average output power are required to achieve broadband SC generation.In contrast, applications such as optical coherence tomography and camera-based imaging require only several tens of milliwatts of optical power. Furthermore, real-time near-infrared spectroscopy based on dispersive Fourier transform techniques demands a low repetition rate on the order of 1 to 2 MHz to satisfy spectral resolution requirements [1]. Although SC lasers operating at such low repetition rates can be realized using optical pulse pickers, such systems require optically and electronically complex systems. To address these issues, we developed a simple SC laser system based on a MHz-repetition-rate MLFL.